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Specifically, Barnes & Noble's consolidated revenue declined 8.5% from the same year-ago period to $1.3 billion, while consolidated earnings before interest, taxes, depreciation, and amortization flipped to a loss of $8.9 million, compared with positive EBITDA of $5.8 million this time last year. Meanwhile, the company's consolidated quarterly net loss more than doubled over last year's fiscal first quarter to $87 million, or $1.56 per share.

Declines across the boardSo what drove those numbers?

Barnes & Noble's Nook segment, for one, posted a 20.2% year-over-year revenue decline to $153 million, hurt by a 23.1% decrease in device and accessories sales and a 15.8% year-over-year decline in digital content sales, the latter of which Barnes & Noble is once again blaming on last year's strong comparison driven by sales of The Hunger Games and Fifty Shares of Grey trilogies.

Remember, just a few weeks ago Amazon reported a 22% increase in its own overall revenue, helped by strong digital sales, with CEO Jeff Bezos telling investors:

This past quarter, our top 10 selling items worldwide were all digital products -- Kindles, Kindle Fire HDs, accessories and digital content. The Kindle service keeps getting better. The Kindle Store now offers millions of titles including more than 350,000 exclusives that you won't find anywhere else. Prime instant video has surpassed 40,000 titles, including many premium exclusives like Downton Abbey and Under the Dome.

Meanwhile, the massively profitable Apple sold 14.6 million iPads and a record 31.2 million iPhones during the June quarter alone -- an impressive feat even as it gears up to launch the widely anticipated latest versions of its products next month -- which helped drive a 25% year-over-year increase in the company's sales from iTunes, software, and services to $3.99 billion.

In the end, poor Barnes & Noble is kidding both itself and investors by trying to place any of the blame for its digital sales decline on just two particularly popular book franchises.

Then again, to Barnes & Noble's credit, this week it did make an effort to piggyback off Apple's and Amazon's success by making Nook Video compatible with iOS and Android, but I can't imagine that move will be a game changer for the struggling company.

Well, revenue there continued to fall, this time by 9.9% over last year to $1.0 billion, driven largely by a 9.1% comparable-store sales decrease for the quarter. Core comparable sales, which exclude sales of Nook products, decreased 7.2%.

Worse yet, the company also said founder and chairman Leonard Riggio just told its board of directors he has suspended his efforts to make an offer for the company's retail business -- effectively negating my speculation that their management shakeup last month was in preparation to take the retail operations private.

However, Riggio did note he reserves "the right to pursue an offer in the future," but for now has decided "it is in the company's best interests to focus on the business at hand."

But can you blame him? After all, why would he want to buy a still-declining retail business now, while its operations are smack dab in the middle of a viscous downward spiral? For now, anyway, Barnes & Noble simply needs to stop the bleeding.

Unfortunately, with each passing quarter becoming more painful, that seems an increasingly insurmountable challenge for Barnes & Noble to overcome.

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As a technology and consumer goods specialist for the Fool, Steve looks for responsible businesses that positively shape our lives. Then he invests accordingly. Enjoy his work? Connect with him on Twitter & Facebook so you don't miss a thing.